<template>
	<view class="uni-navbar">
		<view
			:class="{ 'uni-navbar--fixed': fixed, 'uni-navbar--shadow': shadow, 'uni-navbar--border': border }"
			:style="{ 'background-color': backgroundColor }"
			class="uni-navbar__content"
		>
			<uni-status-bar v-if="statusBar" />
			<view :style="{ color: color, backgroundColor: backgroundColor }" class="uni-navbar__header uni-navbar__content_view">
				<view class="uni-navbar__header-btns uni-navbar__header-btns-left uni-navbar__content_view">
					<view @tap="onClickLeft">
						<view class="uni-navbar__content_view" v-if="leftIcon.length"><uni-icons :color="color" :type="leftIcon" size="24" /></view>
						<view :class="{ 'uni-navbar-btn-icon-left': !leftIcon.length }" class="uni-navbar-btn-text uni-navbar__content_view" v-if="leftText.length">
							<text :style="{ color: color, fontSize: '14px' }">{{ leftText }}</text>
						</view>
					</view>
					<slot name="left" />
				</view>
				<view class="uni-navbar__header-container uni-navbar__content_view">
					<view class="uni-navbar__header-container-inner uni-navbar__content_view" v-if="title.length">
						<text class="uni-nav-bar-text" :style="{ color: color }">{{ title }}</text>
					</view>
					<!-- 标题插槽 -->
					<slot />
				</view>
				<view :class="title.length ? 'uni-navbar__header-btns-right' : ''" class="uni-navbar__header-btns uni-navbar__content_view">
					<view @tap="onClickRight">
						<view class="uni-navbar__content_view" v-if="rightIcon.length"><uni-icons :color="color" :type="rightIcon" size="24" /></view>
						<!-- 优先显示图标 -->
						<view class="uni-navbar-btn-text uni-navbar__content_view" v-if="rightText.length && !rightIcon.length">
							<text class="uni-nav-bar-right-text">{{ rightText }}</text>
						</view>
					</view>
					<slot name="right" />
				</view>
			</view>
		</view>
		<view class="uni-navbar__placeholder" v-if="fixed">
			<uni-status-bar v-if="statusBar" />
			<view class="uni-navbar__placeholder-view" />
		</view>
	</view>
</template>

<script>
import uniStatusBar from '../uni-status-bar/uni-status-bar.vue';
import uniIcons from '../uni-icons/uni-icons.vue';

export default {
	name: 'UniNavBar',
	components: {
		uniStatusBar,
		uniIcons
	},
	props: {
		title: {
			type: String,
			default: ''
		},
		leftText: {
			type: String,
			default: ''
		},
		rightText: {
			type: String,
			default: ''
		},
		leftIcon: {
			type: String,
			default: ''
		},
		rightIcon: {
			type: String,
			default: ''
		},
		fixed: {
			type: [Boolean, String],
			default: false
		},
		color: {
			type: String,
			default: '#000000'
		},
		backgroundColor: {
			type: String,
			default: '#FFFFFF'
		},
		statusBar: {
			type: [Boolean, String],
			default: false
		},
		shadow: {
			type: [String, Boolean],
			default: false
		},
		border: {
			type: [String, Boolean],
			default: false
		}
	},
	mounted() {
		if (uni.report && this.title !== '') {
			uni.report('title', this.title);
		}
	},
	methods: {
		onClickLeft() {
			if (this.$listeners.clickLeft) {
				this.$emit('clickLeft');
			} else {
				uni.navigateBack();
			}
		},
		onClickRight() {
			this.$emit('clickRight');
		}
	}
};
</script>

<style lang="scss" scoped>
$nav-height: 80rpx;
.uni-nav-bar-text {
	/* #ifdef H5 */
	font-size: 26rpx;
	/* #endif */
	/* #ifdef MP-WEIXIN */
	font-size: 34rpx;
	font-weight: 500;
	/* #endif */
}
.uni-nav-bar-right-text {
	font-size: $uni-font-size-base;
}

.uni-navbar {
	width: 100%;
}

.uni-navbar__content {
	width: 100%;
	background-color: $uni-bg-color;
	overflow: hidden;
	position: relative;
	&::after {
		content: '';
		position: absolute;
		left: 0;
		right: 0;
		bottom: 0;
		height: 2rpx;
		background-color: #DDD;
		transform: scaleY(0.5);
		    z-index: 100;
	}
}

.uni-navbar__content_view {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	align-items: center;
	flex-direction: row;
	// background-color: #FFFFFF;
}

.uni-navbar__header {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: row;
	width: 100%;
	height: $nav-height;
	line-height: $nav-height;
	font-size: 32rpx;
	// background-color: #ffffff;
}

.uni-navbar__header-btns {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-wrap: nowrap;
	width: 120rpx;
	padding: 0 12rpx;
	justify-content: center;
	align-items: center;
}

.uni-navbar__header-btns-left {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	width: 150rpx;
	justify-content: flex-start;
}

.uni-navbar__header-btns-right {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	width: 150rpx;
	padding-right: 30rpx;
	justify-content: flex-end;
}

.uni-navbar__header-container {
	// flex: 1;
	width: 40%;
	margin-left: 80rpx;
}

.uni-navbar__header-container-inner {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex: 1;
	align-items: center;
	justify-content: center;
	font-size: $uni-font-size-base;
}

.uni-navbar__placeholder-view {
	height: $nav-height;
}

.uni-navbar--fixed {
	position: fixed;
	left: 0;
	z-index: 98;
}

.uni-navbar--shadow {
	/* #ifndef APP-NVUE */
	box-shadow: 0 1px 6px #ccc;
	/* #endif */
}

.uni-navbar--border {
	border-bottom-width: 0rpx;
	border-bottom-style: solid;
	border-bottom-color: $uni-border-color;
}
</style>
